Sennheiser DRM 85, Service Manual

Page: 34 / 41

DRM 85-C, DRM 85
34/41 08/2007
HM470
L201
HM470
L203
10uM
C211
1.0uK
C201
100nK
C241
100nK
C247
LJE0372-3RT
J203
1 2 3
1.0KJ
R223
2.2MJ
R205
2.2MJ
R211
22KJ R213
39RJ R217
220KJ R215
BC847S Q201
BC847S
Q201
1SS355
D201
+3.3V
BACKLIGHT
EVER_3.3V
TMR_INT
LCDCLK
SCL SDA
EVER_3.3V
10uM C235
1.0MJ R201
**
1.0MJ R203
**
0.0R R219
0.0R R221
1.0uJ
C203
PHONES_L PHONES_R
USB_DN
USB_DP
VBUS
47pJ C205
**
47pJ C213
**
15FLZ-RSM1-TB
J207
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
ADC
ADC
VBUS
DAC
DAC
MCK
MCK
BCK
BCK
WCK
WCK
MOSI
MOSI
CCLK
CCLK
CODEC
CODEC
CODEC_PDN
CODEC_PDN
AMP_OFF
AMP_OFF
BACKLIGHT
PHONES_R
EVER_3.3V
PHONES_L
LCDINT LCD_CS
LCD_D LCD_R LCD_W
SDA SCL
SHDN_CTRL_USB
USB_DP USB_DN
TMR_INT
SW1 SW2
SW3
+3.3V
+3.3V
COM3 COM2
30FLZ-RSM1-TB
J205
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
LCD_R
LCD_CS
+3.3V
LCDCLK
COM2 COM0
COM1
LCDINT
LCD_W LCD_D
COM0
COM1 COM3
SW3 SW2 SW1
CASE
USB2-05
J201
1 2 3 4 5
LTC3405AES6
U201
RUN
1
GND
2
SW
3
Vin
4
Vfb
5
MODE
6
R2051K
U203
OSCIN
7
OSCOUT
8
VSB
4
VDD
6
CIN
10
VSS
11
SDA
1
SCL
2
CLKOUT
3
VDCC
12
INTR
9
VCC
5
VLCD
VSS
OSCO OSCI RD WR DATA BZ BZ COM0 COM1 COM2 COM3
S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31
VDD
CS
IRQ
HT1621B
U205
41 42 43 44 45 46 47 48
1 2 3 4
5
6 7
9
8
10
11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
100pJ
C248
**
TP203
TP202
TP206
TP209
TP216
TP219
TP218
TP201
TP205 TP204
TP207
TP208
TP210 TP211 TP212 TP213 TP214 TP215
TP217
30FLZ-RSM1-TB
J213
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
HPA_PDN
CHIPLED-GRN
D209
100KJ
R226
1.0KJ
R227
10uM C239
3.3uN
L205
165KF R204 124KF R206 1.0MF R200 0.0R R202
MBR0520
D210
1SS355
D203
32.768kHz
Y203
TYCO-F4
J212
1 2 3 4
SI2302DS
Q202
100RJ
R229
1.0MJ
R230
TP220
HPA_PDN
SHDN_CTRL_USB
IP4220CZ6 D205
123
4
5
6
100pJ
C249
100pJ
C250
100pJ
C251
100pJ
C252
1.0MJ R228
150u6V3
C253
HS601T
L206
HS601T
L207
not_mounted C205 C213 C248 R201 R203
SEG[21] SEG[15]
SEG[3]
SEG[24]
SEG[7] SEG[5] SEG[4] SEG[24]
SEG[22]
SEG[0]
SEG[20]
SEG[14]
SEG[1]
SEG[12] SEG[11]
SEG[8]
SEG[10] SEG[14]
SEG[9]
SEG[6]
SEG[21]
SEG[17]
SEG[17] SEG[16]
SEG[6]
SEG[13] SEG[15]
SEG[11]
SEG[18]
SEG[10]
SEG[5]
SEG[3]
SEG[19]
SEG[18] SEG[16] SEG[22]
SEG[7]
SEG[13] SEG[12] SEG[8] SEG[9] SEG[2] SEG[20] SEG[19]
SEG[4] SEG[2]
SEG[23]
SEG[1] SEG[0]
SEG[25]
SEG[25-0]
SEG[25] SEG[23]
100506Ahr0815
TO AF-BOARD
TO CPU-BOARD TO KEYBOARD
TO DISPLAY
** = not mounted
Connector
board, circuit diagram